Composition comprising non-volatile/volatile oils and lipophilic dyes, methods and uses thereof

The present invention relates to a composition comprising one or more particular non-volatile oils, one or more volatile oils and one or more lipophilic dyes.

The present invention also relates to a method for conditioning keratin fibres, in particular human keratin fibres such as the hair, comprising at least a step of applying onto said keratin fibres of a composition according to the invention.

The present invention also relates to the use of a composition according to the invention for conditioning keratin fibres, in particular human keratin fibres such as the hair.

The hair is generally damaged and weakened by the action of external atmospheric agents such as light, weather, and/or the action of mechanical or chemical treatments such as brushing, combing, dyeing, bleaching, permanent and/or straightening.

Thus, to overcome these drawbacks, it is common to resort to hair care implying the implementation of care compositions that can condition the hair following these treatments to give them shine, softness, suppleness, lightness, a natural touch and detangling properties.

However, these hair care compositions do not necessarily give complete satisfaction and can still be improved, especially with regard to the hair shine, the refreshing of the colour of the hair tips, and the definition of the hair curl (without frizz). In particular, the colour of the hair may remain dull and lose its liveliness over time.

Furthermore, the hair compositions of the prior art do not generally give rise to satisfaction with regard to the qualities of use (easy spreading of the composition, no stain on the skin), or in terms of remanence to different external agents (for examples shampoos, light, pollution).

There is therefore a real need to develop compositions which are also able to condition the keratin fibres, to refresh the colour of the hair tips, and to confer improved cosmetic properties to the keratin fibres (especially more shine), after one or more applications, without charge or weighting of the keratin fibres, while maintaining good qualities of use (ease of spreading of the composition on hair, no stain on the skin) and a good definition of the hair curl where necessary.

These aims are achieved by the present invention, one subject of which is a cosmetic composition comprising:

The composition according to the invention makes it possible to achieve the desired properties, inter alia in terms of integrity, quality and cosmeticity of the keratin fibres.

Particularly, the hair treated with the composition according to the invention is full of vitality, shiny and not dull.

Furthermore, the composition according to the invention makes it possible to obtain a good conditioning of the keratin fibres with a good definition of the hair curl (without frizz) and without charge or weighting of the hair, while maintaining good qualities of use (ease of spreading of the composition on hair, no stain on the skin nor on the hands).

Other characteristics and advantages of the invention will emerge more clearly on reading the description and the examples that follow.

In the present description and unless otherwise indicated:

According to the invention, the composition comprises at least 5% by weight relative to the total weight of the composition, of one or more non-volatile oils i) chosen from esters of glycerol and of one or more identical or different, saturated or unsaturated, fatty acids containing 4 to 30 carbon atoms.

According to the invention, the identical or different, saturated or unsaturated, fatty acids may be substituted by one or more hydroxy radicals.

As examples of esters of glycerol and of one or more saturated or unsaturated fatty acids containing 4 to 30 carbon atoms that may be used in the invention, mention may be made of heptanoic or octanoic acid triglycerides, or else wheat germ oil, olive oil, sweet almond oil, palm oil, rapeseed oil, cottonseed oil, alfalfa oil, poppy seed oil, pumpkin seed oil, blackcurrant oil, evening primrose oil, millet oil, barley oil,oil, rye oil, coriander seed oil, limnanthes alba seed oil, nigellaseed oil, pentaclethra macroloba seed oil,seed oil,oil,oil, pennycress oil,oil, safflower oil, candlenut oil, passionflower oil, musk rose oil, sunflower oil, maize oil, soybean oil, marrow oil, grape seed oil, sesame oil, hazelnut oil, apricot kernel oil, macadamiaseed oil, castor oil, avocado oil, caprylic/capric acid triglycerides, such as those sold by the company Stearineries Dubois or those sold under the names Miglyol 810, 812 and 818 by the company Dynamit Nobel, jojoba oil or shea butter oil.

Preferably, the non-volatile oil(s) i) is/are chosen from esters of glycerol and of one or more identical or different, saturated or unsaturated, fatty acids containing 4 to 24 carbon atoms; more preferably from esters of glycerol and of one or more fatty acids containing 6 to 24 carbon atoms.

According to a preferred embodiment of the invention, the non-volatile oil(s) i) is/are chosen from caprylic/capric triglyceride, olive oil, macadamiaseed oil, castor oil, sunflower oil, soybean oil, sesame oil, apricot kernel oil, coriander seed oil, limnanthes alba seed oil, nigellaseed oil, pentaclethra macroloba seed oil,seed oil,oil,oil, pennycress oil,oil, and mixtures thereof; more preferably from the non-volatile oil i) is caprylic/capric triglyceride.

Preferably, the non-volatile oil(s) i) in the composition according to the invention represent(s) from 5 to 45% by weight; more preferably from 7 to 40% by weight; even more preferably from 10 to 35% by weight, relative to the total weight of the composition.

Preferably, the ester(s) of glycerol and of one or more identical or different, saturated or unsaturated, fatty acids containing 4 to 30 carbon atoms in the composition according to the invention represent(s) from 5 to 45% by weight; more preferably from 7 to 40% by weight; even more preferably from 10 to 35% by weight, relative to the total weight of the composition.

Preferably, when caprylic/capric triglyceride is present in the composition according to the invention, caprylic/capric triglyceride represents from 5 to 45% by weight; more preferably from 7 to 40% by weight; even more preferably from 10 to 35% by weight, relative to the total weight of the composition.

The Volatile Oils ii)

According to the invention, the composition comprises at least 10% by weight relative to the total weight of the composition, of one or more volatile oils ii).

Preferably, the volatile oil(s) ii) is/are chosen from hydrocarbon-based volatile oils, volatile silicone oils, and mixtures thereof.

As examples of volatile hydrocarbon-based volatile oils that may be used in the invention, mention may be made of volatile hydrocarbon-based oils chosen from hydrocarbon-based oils containing from 8 to 16 carbon atoms, and in particular C-Cisoalkanes of petroleum origin (also known as isoparaffins), for instance isododecane (also known as 2,2,4,4,6-pentamethylheptane), isodecane and isohexadecane, and for example the oils sold under the trade names Isopar or Permethyl, branched C-Cesters and isohexyl neopentanoate, and mixtures thereof. Other volatile hydrocarbon-based oils, for instance petroleum distillates, especially those sold under the name Shell Solt by the company Shell, may also be used; volatile linear alkanes, such as those described in patent application DE 10 2008 012 457 from the company Cognis.

Preferably, the hydrocarbon-based volatile oil(s) is/are chosen from C-Cisoalkanes such as isododecane or isohexadecane; linear C-Calkanes such as an undecane/tridecane mixture; and mixtures thereof.

As examples of volatile silicone oils that may be used in the invention, mention may be made of:

in which R represents an alkyl group comprising from 2 to 4 carbon atoms, one or more hydrogen atoms of which may be replaced with a fluorine or chlorine atom.

Among the oils of general formula (I), mention may be made of:

corresponding to the oils of formula (I) for which R is, respectively, a butyl group, a propyl group or an ethyl group.

Preferably, the volatile silicone oil(s) is/are chosen from octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, heptamethylhexyltrisiloxane, heptamethyloctyltrisiloxane, hexamethyldisiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, dodecamethylpentasiloxane, and mixtures thereof; more preferably the decamethylcyclopentasiloxane.

According to a preferred embodiment of the invention, the volatile oil(s) ii) is/are chosen from C-Cisoalkanes, linear C-Calkanes, volatile linear alkyltrisiloxane oils of general formula (I) such as described previously, volatile linear or cyclic silicone oils different from the volatile linear alkyltrisiloxane oils of general formula (I) such as described previously, and mixtures thereof; more preferably chosen from isododecane or decamethylcyclopentasiloxane.

Preferably, the volatile oil(s) ii) in the composition according to the invention represent(s) from 10 to 98% by weight; more preferably from 20 to 95% by weight; even more preferably from 30 to 90% by weight, better still from 50 to 90% by weight, relative to the total weight of the composition.

Preferably, when the hydrocarbon-based volatile oil(s) is/are present in the composition according to the invention, the hydrocarbon-based volatile oil(s) represent(s) from 10 to 98% by weight; more preferably from 20 to 95% by weight; even more preferably from 30 to 90% by weight, better still from 50 to 90% by weight, relative to the total weight of the composition according to the invention.

Preferably, when isododecane is present in the composition according to the invention, isododecane represents from 10 to 98% by weight; more preferably from 20 to 95% by weight; even more preferably from 30 to 90% by weight, better still from 50 to 90% by weight, relative to the total weight of the composition according to the invention.

Preferably, when the volatile silicone oil(s) is/are present in the composition according to the invention, the volatile silicone oil(s) represent(s) from 10 to 98% by weight; more preferably from 20 to 95% by weight; even more preferably from 30 to 90% by weight, better still from 50 to 90% by weight, relative to the total weight of the composition according to the invention.

Preferably, when decamethylcyclopentasiloxane is present in the composition according to the invention, decamethylcyclopentasiloxane represents from 10 to 98% by weight; more preferably from 20 to 95% by weight; even more preferably from 30 to 90% by weight, better still from 50 to 90% by weight, relative to the total weight of the composition according to the invention.

According to a preferred embodiment of the invention, the composition according to the invention comprises a weight ratio of the content of non-volatile oil(s) i) to the content of the volatile oil(s) ii), which is between 0.01 and 10, more preferably inclusively between 0.01 and 2; even more preferably inclusively between 0.05 and 1; better still inclusively between 0.1 and 0.9.

The Lipophilic Dyes iii)

According to the invention, the composition comprises one or more lipophilic dyes iii).

Preferably, the lipophilic dye(s) iii) is/are chosen from natural or synthetic lipophilic dyes.

According to a preferred embodiment of the invention, the lipophilic dye(s) iii) is/are chosen from DC Red 17, DC Red 21, DC Red 27, DC Green 6, DC Yellow 11, DC Violet 2, DC Orange 5, Sudan Red, Sudan brown, quinoline yellow, annatto, curcumin, carotenes, xanthophylls, lipophilic green dyes and mixtures thereof.

Among the carotenes, we can mention in particular α-carotene, β-carotene, lycopene.

Among the carotenes, β-carotene will be used more particularly (CI 40800, CI 75130, Food Orange 5 or Natural Yellow 26). The β-carotene molecule is a chain consisting of 8 isoprenic units with alternating single and double bonds, and has the following formula:

β-carotene is found in some fruits and vegetables: pepper, carrot, spinach, lettuce, tomato, sweet potato, broccoli, cantaloupe, squash, apricot. β-carotene can be obtained either by extraction, by synthesis or by biotechnological means. Natural β-carotene comes mainly from red palm oil and alfalfa and also from carrot oil.

According to a particularly preferred form, β-carotene will be used in the form of a dispersion in an oil such as a 30% dispersion of β-carotene in sunflower oil, such as the product sold under the trade name 409185 CAROTENE-DISPERSION NATURAL 30% L-OS E-160A manufactured by LCW—Sensient Cosmetic Technologies or the 30% dispersion in corn oil, such as the product sold under the trade name 30% Beta Carotene FS (Fluid Suspension) by the company DSM Nutritional Products, Inc.

Among the xanthophylls, we can mention in particular: